Does any one know the power band on this turbo , as for the rpm's , starts to spool at 3200? . Where does this turbo build its power , low boost , mid , or high boost, 20psi and over , it seems to be ok but not what i thought it would be under 20psi. Where will the turbo wake up. Thinking of going smaller, 44 or ta49. The 54 seems no better then my old ta33